This insert is uniquely designed to break apart into (2) main components. The first holds all the monsters and tiles while the second (which also holds a smaller, removable, tray) holds the cards and components. The insert is designed to hold sleeved cards. The map tile section is a tight fit. Although you could probably fit an expansion or two in here, I have not tested it and, therefore, will not lay any claims that it can for sure. (Game not included)